Airplane motor



Sept; 12, 1939. A. .1. DENCE AIRPLANE MOTOR Filed Oct. 30, 1936 ATTORNEYS Patented Sept. 12, 1939 UNITED STATES FATENT OFFICE Application October 30,

1 Claim.

This invention relates to airplane engines and has for an object to provide a novel compressor for supplying a combustible charge under pressure to the combustion chamber of the engine.

A further object of the invention is to provide novel funnels at the front of the airplane to receive the blast from the propeller and compress air for delivery to the compressed air tank.

A further object of the invention is to provide a device of this character which will be easy tomanufacture, and which will not easily get out of order.

With the above and other objects in View the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a front elevation of a low wing monoplane equipped with an internal combustion engine constructed in accordance with the invention.

Figure 2 is an enlarged cross sectional View showing a plurality of the air funnels and their connections with the compressed air tank.

Figure 3 is a front elevation of the funnels shown in Figure 2.

Referring now to the drawing, ll designates propeller blades on the front of an airplane 6|. An air tank 51 is located at the front of the air- 1936, Serial No. 108,491

plane and receives air from a pipe 58 which is controlled by check valve 51. The pipe 58 is supplied with air compressed by a plurality of funnels 5!; which are arranged with their large base ends opening through the front of an air 5 chest 59 which is disposed at the front of the airplane 61 in position to receive the blast from the propeller blades II. The spaces between the funnels are closed by streamlined blocks 62 to cut down wind resistance. Air under high ve- 0 locity will be compressed while traveling toward the small ends of the funnels and will enter the air tank 51 for storage. The air tank is provided with a safety valve 63 which will release pressure above a predetermined degree so that 15 air under constant predetermined pressure will be fed to the mixing chamber of the airplane engine and thus frequent adjustment of the needle valve 52 will not be necessary.

From the above description it is thought that 20 the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

In an airplane having propeller blades, a 25 plurality of funnels disposed to receive the blast from the propeller blades, streamlined blocks in the spaces between the funnels to cut down wind resistance, an air chest for gathering the air from the funnels, a storage tank for compressed 30 air connected to the air chest, a check valve controlled connection between the tank and the air chest and a safety valve on the tank.

ALLEN J. DENCE. 

